Printing press



P. F. COX

PRINTING PRESS Nov. 27 1923.

Filed Dec,

3 Sheets-Sheet 1 INVENTOR.

ATTORNEYS Nov. 27; 1923.

I P. F. CQX

PRINTING PRESS Filed Dec. 15 L922 3 Sheets-Sheet 2 6N 1% llll II B @w vy' Nov. 27, 1923; 1,475,566 P. F. COX

PRINTING PRESS Filed Dec. 15, 1 22 s Sheets-Sheet 3 Patented Nov. 2.7, 1923.

warren stares aste Parser oreice.

PAUL F. COX, OF CHICAGO, ILLINOIS, .ASSIGNQR 0F. ONE-HALF TO JOSEPH L. COX, OF

CHICAGO, ILLINOIS. I

PRINTING PRESS.

Application filed December 13,1922; Serial Nd. 606,641. r

To all whom 2'25 may concern:

Be it known that I, PAUL F. Cox, a citizen of the United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements in Printing Presses; and

I hereby declare that the following is a full, Y

clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention relates to improvements in fiat-bed web perfecting printing presses in Which the web is printed by means of traveling (oscillating) impression cylinders from flat forms of type or plates, resting upon stationary beds; while the cylinders are moving in one direction; said cylinders returning over the beds out of contact with the printing forms,,to givetime for the intermittent spacing and feeding of the web of paper. In such presses the impression cylinders are preferably raised and held.- olf impression upon one stroke, so as not to contact the printing forms; and are then lowered down to bearers, or printing line, and held firmly on impression during the re turn stroke of such cylinders.

The principal object of the present invention is to provide a novel simple mecha nism for operating the Web compensating looping rollers. More specifically the invention consists in providing a cam bar, moved in unison with and by the cylinder crossheads, for operating such looping rollers. By this cam ba the operation of the web looping rollers is controlled in proper time.

with the printing and feeding apparatus (in a single acting press) without requiring any extra gearlng or shaftlng or bars, and the web looping mechanism is economical in' construction and can be easily repaired or replaced.

In the embodiment of the invention shown in the drawings the cam bar for operating the looping rollers is attached to one of the reciprocating crossheads by which the cylinders and inking rollers are moved back and forth over the 'beds; th'e cam bar being located in the most convenient and accessible position for inspection and attachment ooacting with an arm connected with the looping roller supports and by which the latter are oscillated to move the rollers in the proper time and manner to cause the desired alternate well and shift of the web overthe beds by the looping rollers during thereclprocations of the cylinders.

While the invention is primarily designed for use in a web perfectingpress, it is appllcable to slngle acting presses; and to other types of machines in which traveling cylinders are employed which are to be:

thrown off impression? on one stroke and thrown on impressionon the return stroke.

I will explain'the invention with reference to the accompanying drawings which illustrate so much of a web perfecting press as Wlll enable the invention to be clearly understood; and summarize in the claims the p essentials of the invention, and the novel features of construction, and novel combina n1sm for actuating the web looping rollers. 4

Fig. 2 is a detail view of part of the web feeding devices.

Fig. 3 is a diagrammatical longitudinal section of such mechanism and cam.

Figs 4: and 5 are enlarged detail views of the web looping devices. f

In the drawings 1 and 1 designate parallel type beds arranged one over the other in a suitable main frame. Cooperating with bed 1 is a traveling impression cylinder 2, and c0 operating with bed 1 is a traveling impression cylinder 2 These cylinders are mounted inhearings in crosshea'ds 3 which are guided in longitudinal guide ways 48 in the sides of the press frame. are reciprocated longitudinally of the guideways so as to move the cylinders 2 and 2 back and forth over the beds by any suitable means, preferably by. means of pitmen 3 The crossheads 3 I press showing thelooping connecting the crossheads 3 with crank gears 4, which may be operated by anyv suitable mechanism.

The cylinder 2 is shown as journaled in eccentric bearings 5 on the crosshead, and the cylinder 2 in eccentric bearings 5 on the crosshead. Such bearings are well known and are preferably constructed as shown in my application #6603, filed August 27, 1921 Serial #495,872 and needs no further description herein.

The general construction and arrangement ofsuch machine and of the aforesaid parts are well known and need no further detailed explanation herein.

In the press shown the cylinders are on impression during onestroke,and oli',iin-

pression during the other stroke of the' crossheads.

In the press shown the web w is led from the roll W under an idler guide roller g to and between the infeed devices which con- SlSt'iOf"; a": roll 5 mountedalupon theshaftJ-t carryingithe'crank gearsl; and a set of end less tapes 5" runninghover'"guid'erollers 5 and:cooperatingm ith;the roll 5 toinfeed the Web in the usual manner.

Web 'w isrled underguide roller 9: to a g'nide roller 9 and thenback overalooping roller 6 rotatably mounted in one end ofoscillatingzarms '6 mounted: oil-"a rock' shaft 6 suitably journaled' in the main frame and operated asr"liere'inafter described;

From looping roller G 'the web-is led in- Wardover thebed Eta-and: over a guide rollerg mounted-onthe crossheads adjacent cylinder 2 andithence upover a guide roller mounted on the crossheads beside cylinder 2% thence out over a stationary guide-=9 mounted on the rearend of the frame; thence-up over a roller 6/ mounted on the frame; thence inwardlvto-and over aroll 9 mounted on the erossheads ad] acen'toyhnder 2; thence downunder cylinder 2 and-up over a guide 9 mounted on tl'i'ecrossh'eads besidecylln'derfl; thence forward to 'and around a looping-roller 65* mounted on the upper ends of the arms 6; tl'iencebacl zun'der a gulde" roller 9"; thence to and over anadjustable tensioning roller thence to'the delivery roll 8.

The delivery'ro'll S'is mounted ona shaft 8 journaled in theside frames of themachine, and drii' enashereinafter described. Vith roll'8 cooperate endless tapes S runningover' guide roll'e rs 8 in the usual manner.

shown.

s shown theinfeed roll- 5 is rotatably" mounted 'up0ntl1e shaft't carrying; the

This roll 5 isdr-lven'iby and in: unison with the main shaft 1 4* asherelnafter'descr1bed;- From rol'l5 the' From roll 8 thawebw passes out'to the: folding and delivering devices,- not a by" dis engaging the dog 5 therefrom, and then the feed roll maybe turned on the shaft to infeed with web in tlireadingjupthe press.

The delivery roll 8 is preferably driven by and from roll 5. As shown the roll 5 has a gear 5 attached to one end thereof which meshes with a gear 5 on geared typo drive shaft 5 journaled in the adjacent part of the pressv On shaft 5 is mounted a bevel gear 5 and thisn'ear 5 meshes with a bevel pinion 5 on a counter shaft 5' journaled in suitable brackets attached to thefra'me. Said Y counter shaft 5 extends toward the delivery roll 8 and has abevel gear 8 on its upper end me; 'itha :lzevehgear S? on the shaft 8 of the delivery 'roll- 8. The gearing is such that the delivery roll 8 is rotated at substantially the same peripheral speed as the infeed roll 5, or slightly faster so that the web'w will be fed into and out of the press at the proper speed during the opera-* ti on thereof.

In threading the press-the feed roll: 5 is diseng'aiged 'l'roin the shaft-4 and then by applying a wrench or crank. (not shown) 1 tothesQuare'd end 8*"- of shaft-,8 (Fig. '1) the" feed and delivery rolls 5 and 8 may be operated manually, as desired, to feed-in and out the web" until the press is properly threaded. When thepress-is threaded and 9 ready foroperation the roll 5 islocke'd to tie shaft l by dog5 (Fig. 2) so as to" rotate therewith, and roll 5 Will then be driven by the shafts, and'the'delive'ry roll' 8 will be driven by the aforesaid counter "1 shaft and gearing from and in unison with the r0115. The feed roll is driven inexact unison with thereciprocation of the=' 'cylinders, and the rotation of the' gears: l' and qearingfor driving theinfecd roll is -not 1 required, and'the del ery roll'is driven by" and from the feed roll;

The levers 6 are 'provided with -arnis G to which are connected rods 6 (Figs. 4: and which extends through eyes-6 on the lowerends-of brackets =6 attached to the side' frame of the press, as"indicated in Figu4c, and'a 'helical spring-6 is strung on rod G between'a collar 6 on rod"6 and theeye 6 These springs 6 normally tend to IIlO'V6' the arm'G upwardly and rock the shaft 6. The ooliars 6 are preferably adjust-able on the rods (5", the upper ends of which are threaded and provided" with adjust ingnuts (5 by which the collars 6 inay be adjusted to vary the tension of the swings 6 as desired@ I prefer tointerposesleeves G"between'the springs 6" and the rod;

6 as shown'in Figs. a and "5.- I

On one end of'the-shaft fi is fixedly so cure'd'an arin6 whieh projects to-ward the crossheads and dovvnwardly,'and is normally held in 'itsdepressed position by a cam-bar 6 attached tothe adjacent crosshead 2 Arne 6 is re-ferably provided with a rolleri 6-engaging bar 6". This cam bar'G eX- tends parallel with the guideway, and path of movement ofthe crossheads, and is moved by and with the crossheads. The under side of the cam bar 6 is so shape-d that as the crossheads move inwardly the arm 6 is depressed, thereby rocking shaft 6, against the action of the springs 6 and moving the looping roller 6 to the right and roller 6 to the left, as the crossheads move toward the shaft 4.

When the orossheads move away from shaft l the cam bar 6 isjretracted and springs 6 throw the arms 6 upwardly, thereby rocking shaft 6 in the opposite direction and keeping roller 6 in close contactwi-th the underside of the bar 6 and thereby moving the roller 6 to the left and 6 to the right, Fig. 1. I preferably providean annular roller 6 above roller 6, and adjacent the arm 6"; said roller 6 contacting with-the upper smooth side of the cam bar 6 and steadying the movement of said bar and preventing any upward vibration thereof. Roller 6 maybe mounted on a stud 6' attached to the adjacent side frame; as

shown. 1

The cam 6 is reciprocated by and with the orossheads and moves in a path of travel parallel with the path of travel of the im pression cylinder and causes the looping rollers 6 6 to properly take up and give out the web during the inward stroke of the cylinders and permits them to give out and take up web during outward movement of the cylinder. f V r By properly shaping'the' cam face of (ram bar 6 the operation of the web looping rollers 6*, 6 is effected and controlled in propertime with the printing, feeding, and

delivering mechanism (in the single acting press) without requiring any extra gearing or shafting or bars; the cam being operated in perfect time and unison with other mechanisms from the main crank wheel shaft.

The web tensioning roller 7 is mounted on arms 7 attached to a rock shaft 7 S mounted in the side frames, and to one of these arms is connected a rod 7 which extends through a bracket 7 on the main frame, see Fig. 3, and is provided with an adjusting nut 7 on its outer end. A spring 7 is'interposed between the bracket 7 and the nut 7, whereby the tension of the spring 7 can be regulated. The spring 7 normally tends to draw the rod 7 outward and causes the roller 7 to automatically maintain the desired tension on the web to between the infeed roll 5 and the outfeed roll 8.

Operation: In the press shown; by dis.

engaging the feed roll 5 fro1n the shaft 4 rolls '8 and 5 can be operated manually, as described, and the web can be easily threaded through the press. When the press is properly threaded, as indicated in Fig. 2, and

and g"- by the action of'the looping rollers 6*, 6", which move in opposite directions,

one giving out web as required by the delivery, and the other taking up the web fed in by the feed roll, as required bythe continu ous infeed and outfeed of the web. After the cylinders have cleared the forms and are off impression, the web is shifted forward by the combined action of the looping rollers, giving out and taking up web, and the continuous action of the outfeed and delivery mechanisms; these operations are well understood in the art and need nodetailed explanation herein. a

What I claim is: I 1. A traveling cylinder web printing press having a reciprocating cylinder, and means for reciprocatingthe cylinder; a device for.

looping the web, a cam movlng with. the cylinder, and means controlled by actuating the looping device. 7

2. A. traveling cylinder Web printingjpress' having cylinders, means for reciprocating the cylinders; and devices for looping the web; a cam moving with thecyli'nders; and means controlled'by said cam for actuating the looping device.

3. In a flat bed Web printing press having a traveling impression cylinder, means for feeding and delivering the. web, and a web looping device; a cam member reciprocated With the cylinder for operating the said looping rollers. 1 4-.- In aflat bed Web printing press having traveling impression cylinders, means for feeding the web, means for delivering the web, and movable looping rollers; a cam the said cam for member reciprocated by and with the cylinders for operating the said looping rollers.

5. In a traveling cylinder web printing press having reciprocating cylinders, web feeding, web delivering, and web looping devices; of a cam traveling with the cylinders and adapted to impart motion to and control the operation of theweb looping devices.

7 6. In a traveling cylinder web'printing )ress havin reci rocatin cross heads means for imparting motion to the cross heads, web feeding and delivering mechanism; and web looping devices; a cam member connected with and operated by the cross heads, and devices controlled by said cam for operating the looping devices.

7. In a web printing press of the character specified having a bed, a co-acting cylinder,

cross heads for operating the cylinder, and

web feeding and Web delivering mechanisms,

a web looping device mounted in the press, rock arms carrylng the Web looping device,

and a cam traveling with the cross heads and cating cross heads for operating the cylinders, web feeding and vweb delivering mechanisms and web looping devlces, of a rock arm for carrying the web looping devices,

springs for operating the arm in one direction, and a cam traveling with the cylinder and engaging said arm to move the looping devices against the, action of the sprin 9; In a web printing press having a bed, reciprocating cross heads, a cylinder journaledin said cross heads and adapted to be reciprocated over the bed; web feeding and delivering mechanisms; weblocping device interposed between the web feeding devices and the bed, and a web looping device interposed between the delivery and the bed, a cam. connected to and traveling with the cross heads, and means controlled by said cam for operating both said looping devices, substantially as cescribed. I

10. lngmechanism as set forth in claim 9,; the Web looping device comprising a rock shaft, arms mounted thereon-,- upper and lower rollers carriedby said arm, spring means forroclting the shaft in one direc tion, and an arm on said shaft adapted to be engaged by said cam to rock the shaft in opposition to the spring means.

1 1-. In a web printing press having stationary beds, reciprocating cross heads,

, cylinders mounted in said cross heads-adapted to be reciprocated over the beds, web feeding and delivering mechanisms, and a web looping roll between the web feeding devices and the beds, and a web looping roller interposed betweenth-e delivery and the beds; of a-ca-m connected to and traveling with the cross heads and means controlled by said cam for operating both said looping devices, substantially as described.

I 12. In mechanism as set forth in claim 11, r

on, upper and lower rollers carried by said arm, spring means for rocking the shaft in one directlon, an arm on said shaft and a reciprocating cam rod-connected with and actu- I atcd by the cross heads and adapted to engage said roller to' rock the shaft inopposit'ion to the spring.

14. In combination with beds and coacting cylinders, cross heads for operating the cylinders, a shaft, crank gears mounted thereon and pitmen'connecting said gears to the cross heads to operate the latter; of a feed roll, a delivery roll and gearing between the feed roll and the delivery roll; of web looping devices comprising a rock shaft, arms mounted thereon, upper and lower rollers carried by said arm, spring means for rock ing the shaft in one direction, an arm on said shaft and a reciprocating cam rod con nected with and actuated by the cross heads and adapted to engage said roller to rock the shaft in oppositionto thespring,

In testimony that I claim the foregoing as my own, I affiXmy signature.

PAUL F. COX. 

